Switch



Feb. 7, 1928.

SWITCH Ill c. BRUYNIS Filed NOV. l2, 1925 Afl D, ...I I

Patented Feb. 7, 1928.

UNITED STATES CARCEL BRUYNIS, OF THE HAS-UCE, NETHERLANDS.

SWITCH.

Application led November 12, 1925, Serial No. 68,693, and in the Netherlands November 13, 1924.

The subject of the present invention is an improved-high tension switch intend-ed for operation by low tension current and especially adapted l'or switching comparatively high tensions (such as 220 volts) which are,

in themselves, a source. of danger to the human body.

The low `tension current used for the op eration of the switch is supplied by cells,

accumulators, or fromthe low tension side generated by a separate source of low tension current no-t dangerous to the human body, said member being operated by a connecting rod that is brought into and retained in a suitable position ready for the succeeding switching operation (on when the switch is oll' and off when the switch is on, or tor switching over in the case of series or other special switches) by means of two independent or separate pressure springs arranged to come into action alternately and neit-her of which influences the action of the other.

lhen the one pressure spring is in operation and acts on the rod the other spring does not make contact with said rod. In other words, the rod is tilted by the spring pressure into the necessary ready position t'or the next switching operation in such manner that of the two alternately acting springs the only spring pressing on the rod at any time is the one that is to perform the task of tilting the rod into the succeeding ready position after a switching operation has been performed.

Preferably the switchv member has studs for the connecting rod whereas co-acting surfaces are provided at the lower end oit said lod such that when the rod comes to bear against .either of said studs, the eort f of traction exerted by the electromagnet is transmitted to the switch member. The studs may also serve as supports for the alternately acting springs.

As a modification a stud or stop may be provided on the connecting rod for co-operation with notches cut in the lower side of the switch member.

The invention will now be described hereinafter, with reference to the accompanying drawing, whereon- Figures 1 to 4 represent vertical sections through the commutator showing the movable parts in four different positions; Figure 5 represents a vertical section through the commutator at right angles to that of Figures l to 4; and Figure G represents avertical' section of another embodiment in which the low-current coil is omitted.

In Figures 1, 2, 3, 4 and 5, a denotes 'the solenoid; b an iron clamp for the same; c the iron core, secured to the clamp b by the nut e; d is a copper spindle secured in said core; f is an iron armature provided with a through longitudinal bore loosely surrounding the copper spindle cl, so that the armature is able to. move longitudinally; g Figure 4) is a spiral spring arranged round the armature and exerting on the latter a force tending to thrust the latter outward; 7L is the connecting rod, one end of which is articulated to the armature'by means of a pin i. whereas its other end is in the shape of a double-barb harpoon; j is asmall plate set edgewise on the rod L and serving to limit the angular stroke of the same by contact with a spring fn. or a spring 0,' 7c is the switch lever` for the high tension current.

The switch lever lc pivots on a shaft r and has fitted thereto .on one side of said shaft, or on both sides if the switch is of the double pole variety, a short piece of insulating tube p. On the end of this tube is fixed a copper contact ringg, flattened on opposite sides in such manner that these flattened surfaces are not parallel but diverge upwardly. rlhe object of this is to retain the commutator lever between the two contact springs s and t after the rod 71, has returned to its position of rest. Said contact springs s and t are connected to the high tension circuit, and the two terminals u and o (Figure 4) are connected to the ends ot the winding of the magnet coilV a and also to the low-tension current circuit.. Spring jaws w holdthe switch lever 7a when the latter is not engaged between the contact springs s and 2f.

On the switch lever Z: are two studs or stops Z and fm, to which are attached springs n and o. p

A spindle (Figure), which is mounted on the iron clamp bfand carries a button, limits the downstroke of the armature f.

Two stops y and a prevent the switch 'lever 76 from turning too far in either direction.

As shown in Figure 5, the whole unit is lli) mounted on a base plate a, a ofinsulating material.

Figure 1 shows the positions of the moving parts of the switch when the magnet' tension circuit through the contacts s, z5 and the contact ring g. .Y

While the switch lever c is in this position, the spring 0 bears against the plate on the rod It now the r.low-tension current circuit through the solenoid a is broken, the armature f with the rod 7L will descend again, coming into the position represented in Figure 3 and at the same time, under the pressure of the spring o, the barb of the rod will be swung under the stud Z of the switch lever 1 so that on low tension current being again admitted to the solenoid the lever will be thrown over and the moving partsv will .take up tlieposition shown in Figure 4 in' which the high-tension circuit is broken.

In the modihcation illustrated by Figure 6, the harpoon rod is replaced by a rod terminating in a spindle at the lower end and acting in the same manner for reversing the switch lever, two notches being cut in the lower side of said-lever to form stops, one on each side of its pivotal point, and situated at the same distance apart as the two studs Z and m in the arrangement according to Fignres l to 4. The spindle of the connecting i'od is caused to engage the notches or stops by the spring mechanism of the commutator lever.

Having now fully described my invention what Iv claim and desire to secure by Letters Patent is 1. In an electromagnetic switch for ahightcnsion current installation, the combination of a, switch member arranged to be actuated by current impulse generated by a separate and independently upon .the connecting rod to bring and maintain the same in position ready for a succeeding switchingv operation.

2. In an electromagnetic switch for ahightension current installation, the combination of a switch member arranged. to be actuated' by a current impulse generated by a. separate source of low-tension current not dangerous to the human body, a tiltable and slidable co`nnecting rod for operating the switch member, and two separate pressure springs arranged to actalternately and independently upon the connecting rod to bring and maintain the same in. position ready for a succeeding switching operation.

3. In an electromagnetic switch for a hightension current installation, the combination of a switch member arranged to be actuated by a current impulse generated by a separate source of low-tension currentnot dangerous to the human body, a tiltable and slidable connecting rod for operating the switch member, studs on the switch member, co-acting surfaces at the lower end of the rod such that when the rod comes to bear against either of said studs the eiiort of traction exerted by the low-tension current inipulse on the rod ,is transmitted to the switch member, and two separate pressure springs arranged to act alternately and independ- -ently upon the connecting rod to bring and maintain the saine in position ready for the next succeeding switching operation.

4. In an electromagnetic switch for a hightension current insta'llation, the combination of a switch 'member arranged to be actuated 'by a current impulse generated by a separate source of low-tension current not dangerous to the human body, a tilt-able and slidable connecting rod for operating the .switch member, studs on the switch member, coacting surfaces at the lower end of the rod such that when the rod comes to bear against either of said studs the effort of traction exerted by the low-tension current impulse on the rod is transmitted to the switch meniber, and two separate pressure springs mounted on the aforesaid studs and arranged to act alternately and independently upon the connecting rod to bring and maintain the-same in position ready fr the next succ eeding switching operation.

In testimony whereofl I atlix my signature.

CAREL BnUYNis. 

